I've decided that enough is enough. My townmates are being resilient and stubborn; our organization, a complete mess. It's time for me to bite the bullet and get out of this town so I can go Die2Nite elsewhere. How do I kill myself?
If you have a cyanide tablet available to you, you can suicide instantly.
The alternative options are myriad, but slower. The most obvious choice is waiting for nightfall. Just wait outside the city gates. Zombies will happily oblige you.
Note that dying of suicide or outside the gates at night will cause any achievements from the previous day to be lost (it's considered not living through the whole day).